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Green PCB memory module with black chips and gold edge connectors

A-Tech

A-Tech 32GB DDR4 2666 ECC UDIMM 2Rx8 Samsung M391A4G43MB1-CTD Server Memory

SKU CH-GXNF-4R7FJ

A 32 GB DDR4 2666 ECC UDIMM module with CL19 timing and 1.20 V operation for server workloads

  • Total capacity32 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • 32 GB capacity handles heavy server workloads
  • DDR4 2666 MHz speed delivers fast data throughput
  • ECC UDIMM detects and corrects memory errors
  • CL19 latency at 1.2 V keeps power draw low
  • 2Rx8 rank on 288-pin DIMM fits standard slots

32GB DDR4 2666 ECC UDIMM Server Memory

This A-Tech module delivers 32GB of DDR4 2666 (PC4-21300) ECC unbuffered memory in a single 288-pin DIMM. It operates at the standard 1.20V with CL19 latency and uses a 2Rx8 rank configuration built with major brand chips. The part is a compatible equivalent for the Samsung M391A4G43MB1-CTD module.

Suited for servers and workstations needing ECC

This module fits systems that accept DDR4 2666 ECC unbuffered DIMMs and have a free 288-pin slot. It is not for platforms that require registered or load-reduced memory, nor for boards limited to non-ECC or lower-density modules. Buyers needing higher speeds, different voltages or registered DIMMs should look elsewhere.

32GB single-module capacity decides fit

The 32GB density on one stick determines whether your board and CPU memory controller support this rank and capacity per slot. Verify the maximum supported density per DIMM and the qualified vendor list for your specific server or workstation model before ordering.

How it compares

Measured against everything we stock in ECC Server RAM, at today’s prices. Recalculated every night.

Price $261.99
Pricier than about 57% of the 6,523 comparable items (median $188.99).
Total capacity 32 GB
Typical for this category: the median of 6,064 items is 32 GB.
Price per GB $8.19 per GB
Pricier than about 58% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameA-Tech
Total capacity32 GB
Performance
Rated speedDDR4 2666 (PC4 21300)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL19
ECC supportYes
Buffer typeUnbuffered
Memory rank2Rx8
Power
Rated voltage1.2 V

Questions about this item

Will the CL19 latency at 2666 MHz become a bottleneck under sustained server workloads?

The module runs at CL19 with a 2666 MHz data rate, so latency is fixed at that specification for continuous operation.

Does the 1.20 V ECC UDIMM run hot or loud during all-day use?

Standard DDR4 1.20 V voltage keeps power draw low, and the unbuffered design has no active cooling to generate noise.

What motherboard slot and memory controller features are required for this 288-pin 2Rx8 module?

A DDR4 UDIMM slot with ECC support is needed; the 288-pin form factor and 2Rx8 organisation must be accepted by the platform.

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